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gsdx: simplified isnan test, it compiles to an inline sse instruction and a flag test, silent hill dump still looks fine.

This commit is contained in:
gabest11 2015-08-03 11:26:48 +02:00
parent 6e1cd077a9
commit 85117ecbdd
1 changed files with 9 additions and 1 deletions
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10
plugins/GSdx/GSState.cpp
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@ -27,6 +27,8 @@
#include <sys/stat.h> // mkdir
#endif
#define _isnan(f) (f != f)
//#define Offset_ST // Fixes Persona3 mini map alignment which is off even in software rendering
static int s_crc_hack_level = 3;
@ -466,6 +468,7 @@ bool GSState::IsEnabled(int i)
float GSState::GetFPS()
{
float base_rate = ((m_regs->SMODE1.CMOD & 1) ? 25 : (30/1.001f));
return base_rate * (m_regs->SMODE2.INT ? 2 : 1);
}
@ -506,6 +509,7 @@ void GSState::GIFPackedRegHandlerSTQ(const GIFPackedReg* RESTRICT r)
q = q.blend8(GSVector4i::cast(GSVector4::m_one), q == GSVector4i::zero()); // character shadow in Vexx, q = 0 (sTex also 0 on the first 16 vertices), setting it to 1.0f to avoid div by zero later
*(int*)&m_q = GSVector4i::store(q);
ASSERT(!std::isnan(m_q)); // See GIFRegHandlerRGBAQ
ASSERT(!std::isnan(m_v.ST.S)); // See GIFRegHandlerRGBAQ
ASSERT(!std::isnan(m_v.ST.T)); // See GIFRegHandlerRGBAQ
@ -714,9 +718,12 @@ void GSState::GIFRegHandlerRGBAQ(const GIFReg* RESTRICT r)
rgbaq = rgbaq.upl32(rgbaq.blend8(GSVector4i::cast(GSVector4::m_one), rgbaq == GSVector4i::zero()).yyyy()); // see GIFPackedRegHandlerSTQ
m_v.RGBAQ = rgbaq;
// Silent Hill output a nan in Q to emulate the flash light. Unfortunately it
// breaks GSVertexTrace code that rely on min/max.
if (std::isnan(m_v.RGBAQ.Q)) {
//if (std::isnan(m_v.RGBAQ.Q))
if(_isnan(m_v.RGBAQ.Q))
{
m_v.RGBAQ.Q = std::numeric_limits<float>::max();
}
}
@ -724,6 +731,7 @@ void GSState::GIFRegHandlerRGBAQ(const GIFReg* RESTRICT r)
void GSState::GIFRegHandlerST(const GIFReg* RESTRICT r)
{
m_v.ST = (GSVector4i)r->ST;
ASSERT(!std::isnan(m_v.ST.S)); // See GIFRegHandlerRGBAQ
ASSERT(!std::isnan(m_v.ST.T)); // See GIFRegHandlerRGBAQ